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Isolation of macrophages from human placenta
Journal of Immunological Methods
|April 8, 1985
Summary
Researchers optimized the release of human placental mononuclear phagocytes using a trypsin-DNAase enzyme combination. This method yields stable, phagocytic cells expressing Fc receptors and monocyte-macrophage antigens, ideal for immunological studies.
Area of Science:
- Immunology
- Cell Biology
- Histology
Background:
- Human placenta is a potential source of immune cells.
- Efficient isolation of placental mononuclear phagocytes is crucial for research.
Purpose of the Study:
- To optimize enzyme combinations for releasing mononuclear phagocytes from human placenta.
- To characterize the isolated cells for immunological applications.
Main Methods:
- Sequential enzyme extraction using trypsin-DNAase.
- Cell culture and assessment of adherence and stability.
- Functional assays for phagocytosis.
- Immunofluorescence staining for Fc receptors (FcR), monocyte-macrophage antigens, and MHC class I and II antigens.
Main Results:
- Trypsin-DNAase sequential extraction yielded the highest number of stable, adherent cells.
- The majority of isolated cells demonstrated phagocytic activity and FcR expression.
- FcR-positive cells co-expressed monocyte-macrophage markers and MHC class I and II antigens.
Conclusions:
- A trypsin-DNAase enzyme combination effectively isolates viable mononuclear phagocytes from human placenta.
- These placental macrophages are suitable for immunological research due to their functional and phenotypic characteristics, including MHC class II expression.